Mechanical movement



July 8 1952 w. Hl KINTZINGER 2,602,662

MECHANICAL MOVEMENT Filed No?. 23, 1945 2 SHEETS- SHEET 1 25 E 'l a 29 2. 23 agi/710 /4 f5 f5 f6 f7 i 4 5 2692 (25 /I /l /f Im 27/25 Z o fr? 7) 2 z\ /5 6 July 8, 1952 W H, KlNTzlNGER 2,602,662

MECHANICAL MOVEMENT Filed Nov. 25, 1945 2 SHEETS-SHEET 2 //.ff' Y d,

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Patented July 8, 1952 UNITED STATES PATENT A OFFICE l 2,602,662 Y v fr MECHANICAL MovEMEN'r Warren H. Kintzinger, Cedar Rapids, AIowa r VAspiration November 2s, 1945, serial No. 630,336

' '1 Claims.

A further object of this' 1nvention is to provvide'an additional spring force to the: plunger which is effective at least through said remain'- ing portion o f the range of movementto advanceV Another object of this invention is to provide an improved mechanical movement vof the type specified above but wherein a plurality of spring forces may be sequentially applied to the plunger to advance the same withY varying amounts of force during its advancing movement.

Still another object of this invention is to provide an improved mechanical movement. of the type specified above but wherein a spring force maybe applied to the plungerto move it in one Vdirection from an intermediate position, wherein ai spring force maybe applied to the plungerrto move it inthe opposite direction from another intermediate position and wherein the plunger is free withrespect to said spring forces between said intermediate positions.

j A further object is to provide means in the mechanical movements of the type specified above wherein the application of the spring force to the plunger maybe readily prevented.

-The mechanical movements of this invention have numerous uses and may be readily utilized for such 'purposes as door springs, door checks, car springs, shock absorbers and for many other purposes requiring the above spring force actions.

Other objects and advantages will become apparent to those skilledin the art upon reference to .the accompanying specifications, claims and drawings in which:

Figure 1 is a sectional view of one form of this invention showing the plunger retracted;

' Figure 2 is a view similar to Figure lshowing the plunger advanced;

Figure 3 is a sectional view taken substantially along the line 3-3 of Figure 2;

Figure 4 is a sectional view of another form of the invention showing the plunger retracted;

Figure 5 is a view similar to Figure i but showing 'the plunger advanced; f

AFigure 6 is a sectional view of another form oi this invention whereinv the spring force is applied vin opposite directions, the plunger being shown in an intermediate position; Y

Figure 7 is a sectional view taken substantially along the line f1-'I of Figure 6;

Figure 8 is a view similar to Figure 6 but showing the plunger in the right hand position;

Figure 9 is a view similar to Figure 6 but showing the plunger in the left hand position;

Figure 10 isa sectional view of another form of this invention utilizing a plurality of springs for sequentially advancing the plunger, the plunger being shown in the retracted position;

Figure ll'is a view similar to Figure 10 but showing theplunger in the advanced position; l

Figure 12 is a sectional view of a further form Aoi this invention corresponding generally to the form illustrated in Figures 4 and 5;' and Figure 13 is a sectional view taken 'substantially along the line |3|3 of Figure 12. f Referring rst to Figures 1 to 3, the mechanical movement device includes a casing unit I0 having a head and an elongated cylindrical cup I2. The cup I2 may be screw threaded to the head as at I3. The casing member|0 may be provided with a suitable bracket |4 with a hole I5 therein for purposes of mounting the casing member l0.

A plunger I6 is slidably mounted in the casing member I0 through a suitable bore in the head The plunger I6 may be provided at itsV ex-` tremity with a suitable hole for the purpose of mounting the plunger I6. The plunger is provided with a longitudinally extending groove I8 in which is located a pin I9 carried by the head The groove I8 and the pin I9 operate to prevent rotation of the plunger I6 with respect to the casing I0.

The casing l0 is provided with a plurality of circumferentially spaced longitudinal grooves 2|, four of such grooves being shown for purposes of illustration. The plunger I6 is provided with a plurality of longitudinal grooves 22 which are in circumferential register with the longitudinal grooves 2| of the casing I0. A plurality of arms 2-3 are located within the grooves 2| and 22 and are adapted to slide from the grooves 2| to the grooves 22 when the plunger I6 is advanced and to slide from the grooves 22 to the grooves 2|' cup member l2 of the casing |0,'and it includes an enlarged circular groove 26 for receiving the ends of the arms 23. The actuator 25 is also provided with a bore 21 through which the plunger I6 may pass. The actuator 25 is also provided with a spring seat 28 which receives one end of c 23, however, is prevented because they are con-'Y4 ned in the grooves 2l of the casing. The plungerl6 is, therefore, free to move with respectto the spring force provided by the springv'29. N

As the plunger i6 is advanced by some externa-l,v

4 spring means in one direction from an intermediate position and in the opposite direction from another intermediate position, the Vplunger being free with respect to the spring means between the intermediate positions. In this form of the invention, the casing 46 includes a cylinder 4| and heads 42 and 43. The heads may be provided with lugs 44 and 45, respectively, which in" turn arfeprovidedwitl'i holes'tSj and 41 respectively' for purposes" 'of mounting the casing 40. The heads 42 and 43 may be screwed 'in-to the cylinder 4I as at 48 and 49, respectively.

. The plunger. 56 extends through the casing mem- Vber 46 lan'd'is slidably carried in bores in the v,heads 4.2,andv 43.11; The plunger 50 includes a lon- .,gitudinally extending groove 5I in which is loforce, it moves to a position wherein the ends of 4 the grooves 22 in the plunger line up withvthe' ends of the arms 23. When this occurs, the compression'spring 23 forces the arms. 23 to slide from. the grooves 2V into the grooves 22 'with the result that thepspringfforce is. appliedfthrough the arms 23 to the plunger I6, whereby the spring 29 -then advances the=plunger '25 tothe extreme right hand position shown in-Figure 2.1

- When'the'plunger i6Y isggretracted loyisome eX- ternalforce, the initial"v retraction iscppesed lby the compression springjfr'll acting through the arms 23. When, however, the plunger1l6is r-e-` tractedto a postionwherein the arms 23 line up with the grooves 2|, further retracting Qfgthe plunger lcauses the arms 23,-to slide fromk the grooves;22 into. the grooves 2 i. Further retracting movement ofthe plunger itistherefore free withavre'spect to .the spring Vforceof the spring '.Iherefvore, the Aplunger i6 is Vfre-:ewith'V respect tothe springg26` throughouta portion of its total range of movement, and when the plunger 126 is advanced 'beyond ithis' portion of -therangeof y movement; then the spring 29 becomes effective to move-the plunger -I6 `throughfthe otherI portion of its completerange of movement. u The other forma of the invention illustrated-in Figures 4 and AY5 utilizes all of theparts'utilized -in thesform illustratedin Figures l4 to-3 'and Ilike reference characters have been utilized for like parts. In the form of the inventionrillustrated cated a pin"52'c'a'rried by the head 42. The groovek 5I` and the pin 52 operate to prevent rotation of the plunger ";'with respect to the casing .46. 1 .l l y,

The head 42 of the casing 46 is provided'with a` plurality of circumferentially spaced longitudinal grooves 53, three being shown for purposes of, illustration. .Infa like manner, the head 43 is provided,r ,with a plurality of i circumferentially spaced longitudinal grooves 54 andthe4 grooves 5.3. .and 54 .are vin longitudinal alignment with re-l spect togeachcther. `The plunger 50 is` also 'proe vided withaplurality of circumferentially spaced in 'Figures 4 and 5, the plunger I6 is provided with an' internal bore 32'for slidably receiving a guide pin 33 suitably secured to the casing l0 as byv screw threads 34. A` coil spring 35 extends between the end of .the casing I6 fand the end of theplunger Al6,'and vthe spring '35 operates to advance the vplunger I6 to the right. fThus the spring 35 imparts an-advancing movement to the plunger I6 .whenthe-plunger is free with respect to the spring 29. If desired, the? spring 35-may be offsuch length and configuration that yitvoperatescn the plunger `l 6 only so long asthe plunger I6 is freewith: respect -tc the springfforce im#V parted by theA spring 29;. On the other hand,`the spring-35 may beof suchpllength. and configuration'so :that itat all times'imp'arts'an advancing movement tothe plunger it". The spring 35x1nay be lighter than the spring. 23', thereby imparting less force to the plungeri6,' I The plunger I6 iis, therefore, advanced through at leasta portion of its. range-of movement by A f inFigures a 6ltoi'9, the plunger is adapted to be lmoved by grooves'55l which are in circumferential register with the grooves 53 and54.` A plurality of arms 56,v operate in the grooves '53and55 and slide fromI thelgrooves 53l to the grooves 55 when the plunger'. 56 fis movdto therig'htgas Vshown in Figure. Eiland are jadapted. to slide from the grooves 55 into the grooves 53 when the .plungerfisyrnoved'to intermediate position, as" shown in. Figure 6, or to the left, as shown in Figure 9. A plurality. of arrnsv5l` are carried in the grooves E'itzirid 55andareadapted to Aslide from the grooves 5,4 Ainto :thegrooves' 55 when theplunger 50 is mcvedto the left, as shownin Figure 9, and are adapted 'to move fromthe grooves 55 into thegrooves 54 whenthe plunger ismoved tointermediateposition, as shown in Figure 6, or is moved tothe right position, as' shown in Figure 8. 4. A-n actuator fislidably mounted in the casing Mlghas an'annular groove -60 for receivingthe end s'of thenarms 56, anditis-provided with a bore lzthrough which the plunger 50 extends.l Another actuator62 `is provided with an annular groove 63 receiving the ends -of the arms 51-and itis provided-with a bore 64 through which the plunger.V 59 extends.;v rA compression spring 65 extends between the'actuators 5,9.v and 62,-it being accommodatedfin the actuator 59by a spring seat 66 and in the actuator 62 b y afspring seat 61. `With the parts. in the position shown in Figure 6, the plunger 50 is in; an intermediate position and the arms 56 and 51 are located in the grooves 53fand 54,` respectively, the spring 65 is compressed and the plunger 56 is free to move with respectr to the spring force of the spring 65.

When the plunger 50 is moved to the right, it moves freely until such time1as' theggrooves 55 line up with the ends of the arms 56, and at this time the spring, causes the arms 56 to slide from the grooves 53 into the grooves 55, whereupon the spring 65 moves theY plunger 50 toward the 'rightl tothe v`'pcsitionshown in Figure 8.

When the plunger 56 vismoved tothe left from the position shown in Figure 8, such 'movement is'opposed bythe spring 65, but when the/plunger 56 'reaches a positionwher'ein the'arms 56 line up With the grooves 53, then further movement of the plunger-50 'causes'the arms 56 to slide from the grooves 55 into the grooves'.53. At this point, therefore, the spring 65 is completely compressed, and the plunger50 isfree tomovewith respect'to the force of the spring.65. As the plunger 50 is further moved tothe left, it passes through the position shown in Figure 6 and reaches' a positionA wherein the'grooves 55 line upv withv the Aends of the arms 51.

When this occurs, the springk65 .causes the 1arms 51 to 'slidefrom the .grooves 54 into the grooves 55 whereupon .the spring 65 operates to :move the plunger. 50 to theleft to the position shown in Figure 9.

' When' the plunger 50 is moved vto the; right 'from the position shown in Figure 9, itsmove- '.fment is opposed by the spring 65,l and when it has moved to a point whereinl the arms'51 line y up with the grooves 54, further movement of the plunger 50 beyond thispoint causes the arms 51 to slide from the grooves 55 to the grooves 54. When thisioccurs, the spring 65 is compressed,

. and the plunger 50 is free to move with respect to the spring force of the-spring 65;

Therefore, inthe form of the inventionrillusv trated by Figures 6 to 9 the spring force operates to `move theplunger in one directionV from an intermediatepoint and vin the opposite direction from another'intermediate point, and-the plunger is fr'ee'to move with respect to the spring force.

between the intermediate positions.

In1theform of the inventiongshown in Figures 10and 11; a'pluralityv of spring forces are sequentially applied :during theV advancing movement-oftheplungerfor advancing the plunger with varying degrees of spring force. Here the casin'g10 includes a head 1| and an'elongated l.cup portion 12 screw threadedf'to the head 1| as at 13. The casing 12 may be provided with a lug 14 having a hole 15 for the purpose of mount ing thel casing; Located within the casingr10 isa :partition 16 whichv is held stationary withinthe casing 10 by a pin 11.r AV plunger 19 is slidably. mounted in the'casing 10 and is supportedv for. sliding movement byC vboresin the head 1| `and thepartition 16.

The plunger' 19 maybe .provided -with a suitable mounting' structure, notv shown. The plunger I19 .isz provided lwith a longitudinally extending -to slide from thegrooves 93-.zinto the "grooves'f94 and vice versa. An actuator 96 .is "slidably --mounted inthe casing 10 and is providedwith an annular groove 91'f for receivigthe'e'ndsof the arms 95. AL'bore'98'in theactuator' 96'permits the plunger 19 to extendthroughthe actuator-96. :'The actuator; 96 includes a spring seat 99 for receiving one *end ofa compression spring |00, the otherend of: which is accommodated by a spring'seat |0| on the casing 10.

l With the parts 'in the-position shown in Figure `410, the plunger 19'is z completely retracted, the

I respect to the arms 85 are in the grooves 83,'the arms 95 are in Athe grooves 93 and the springs 90.a'nd- |00 are compressed. The vplunger. isfree'to move 'with on spring forces ofthe springs 90 and As the plunger is advanced to the right from the; position shown inFigure 10,`the" grooves `64 line up with the. ends ofthe arms 85whereupon the spring 90 Icausesv the arms r85 'to slide into the grooves 84 to impart a-spring force'to the plunger 19 for advancing the same.

As the plunger 19 :continues in its advancing movement, the grooves 9'4line-up with the arms 95 and the spring |00 then causes the arms95 y to slide into thel grooves94- whereupon the spring .grooves 93, the arms 95 slide into the grooves 93 groove vcooperating with a' pin8| carried by the .50

head 11| for preventing; rotation lof the plunger 19 with respect to the casing10.l

The head 1| of the casing 10 is provided with a plurality of circumferentially spaced longitudinalgrooves- 83, vand the plunger 19 is provided.; l with a plurality of circumferentiallyspacedlongitudinal grooves 84'which are in circumferential register with the grooves .83. A plurality of Aarms 85 are adapted to slide from the grooves 83. into the grooves 84 and vice versa. 4'An actuator-86rf0 is slidably mounted in thecasing' '10 and is provided with an annular groovev 81 for receiving the ends of the arms'85. The actuator 86 is also provided with a boreA 88 through Which" thek plunger 19 extends.l The actuator 86in addition is pro-,L vvided Witha spring seat 89 for accommodating `one end of a compression spring 90, the other end being accommodated by a spring seat 9| inthe 'partition 16. The partition 16 is provided with aplurality ofcircumferentially spaced longitudinal grooves -93 and the plunger 19 is also provided with a-plurality of lcircumferentially spaced longitudinal grooves 94 inl circumferential register with the .grooves 93. A plurality of arms 95 are adapted shownin Figure 10.v si f |00 imparts a spring force tothe plunger 19 for further advancing the plunger with a .further force to the position shown in Figure 11.

When the plunger 19 is retracted from therpolsitionfshown inFigure 11,. the retraction is opposed .by both springs |00 and 90. `Whenvin its .retracting movement, the plunger 19 reaches a .position wherein rthe arms 95.1ine'up with vthe and the spring |00 is compressed and the'plunger 19 is free to move with respect to the sprin'gforce of the spring |00. v Further retracting movement ofthe plunger 19 is opposed then only bythe spring 9|),v and when the plunger19 is moved Ito a position whereinthe arms 85 line lupvwiththe A grooves 83, the arms 85 slide into the grooves .83. At this point then kthe spring is compressed and-.they plunger 19 isfree to move with `respect to the spring force of the spring 90. .Further retra-cting movement of theplunger 19 lis therefore free until. it reaches the retracted;-position, as

`iflccordingly the formo the invention shownin vvFigures l0 and 11 permitslfreeadvancingmovement of the plunger 19k through a portion' .of its vrange of movement, causes the -plun'ger to .be advanced by a spring force through anotherfportion of its range .ofmovement and `causes the plunger to vbe advanced -by an additional spring force through-stillanother portion of .its range of movement.v .When the: plunger isv beingrevtracted, it is initially opposed by two :spring forces. Thenit is opposed-by a single'spring force and then it is free to movewithrespect y to the spring forces.

The form of the.invention'shownjirr'FiguresflZ and 13 is very similar to that in the formillusitrated in Figuresll and 5 and like reference char- 'acters for like parts have been utilized.. In the form illustrated vin Figuresv l2 and 13, however,

the circumferentially spaced longitudinal grooves vZI'instead vof being located in vthehead are located ina sleeve ||0 rotatably mounted vin the .casing |0.- 'The sleeve ||0is provided with a handle I which mov-es through aslot 1| I2 in the cup portion 2 lof the casing; |0. The slot||2 cooperating with the handlel llimits :the `amount of rotation that maybeA appliedz'to the sleeve Iv l0 .and also prevents *.ment'of the sleeve'lili.-y c Y 1-With the. parts in the positions shownv in Figlongitudinal movein -fcrcumferentialregister with theV grooves 22 f in zthexplungerzl so that when the plunger. I6

isz advanced and retracted, the operation of this niorm of,v the invention kisrthesame'as that of the form illustrated in Figures 4.and 5.

When, however, the sleeve I IUSis. rotated to the other position; thegrooves 2l and arms 23 are vn'i'ovedfxout of rcircumferential register with the grooves 22' ini the plunger lSso that as-the plunger I6 is advanced, the arms 23 cannot slide into the groovesV 22 whereby applicationof the springforce `of the spring 29 tothe plunger I 5 is prevented. This arrangement, therefore, permits complete free movement ofthe plunger I6 .With-respectv to the spring force loi the spring 29 throughout its complete range of movement upon rot-ationV of the sleeve toone position and permits'free movementof the plunger With'respect to the spring vforceof the spring 29 throughout only a portion of its range of movement when the sleeve l'lis rotated kto the othenpo'sition.4

Obviously, the 'rotatablesl-eeve arrangement of "-Figures'12 and 13 may be equally as Wellapplied i'to the'vario'us forms of the invention illustrated herein.

I claim 'as my invention: l. 'A mechanical movement comprising, a casing, aplunger slidable therein, a longitudinal 'g'rooveof limited length inthe plunger, a longithe-casing `into thefgroove in the plunger and said-spring means being' compressedv'and said 'plunger being' free of the spring means when V'the'p'lunger is retracted and the arm slides out of vthe groove the casing.

in theplunger into the' groove in 2` A mechanical movement comprising, a casing, a plunger slidable therein, a 'longitudinal groove of limited length in the plungerfa longitudinal groove'of limited length in the'casing in register Awith the groove in the plunger,v an arm 'slidable from one groove 'to the' other as the plunger is advanced and retracted in the casing,

` spring means for advancing the arm, said spring means acting through' the arml to advance the- 'plunger When the arm slides out'of the groove in the casing into the groove in the plunger and said 'spring 'means being compressed and said in the casing, and second spring means `acting von said" plunger tending to move said plunger at all times. f y

'3.' A mechanical movement comprising, a casing, a plunger slidable therein, a longitudinal groove of limited length in the plunger', a longitudinal groove of limited length in the casing in register with the groove in the plunger, an arm jslidable from one groove to the'other as the 'plunger is advanced and retracted in the casing,

spring means for advancing vthe arm, said spring means actingthroughthe arm to advance the plunger When the arm slides out `ofthe groove -in the Kcasing into the groove in the plunger and inlthe! plunger when; the plunger is advanced, a #second arm slidable fromthe second groove in said spring 'means being vcompressed andsaid vplunger'being free ofthe spring vmeans when the 'plunger is; retracted'and the arm slides out of thefgroove `in the plunger into the groove inthe casing, and second spring means engaging said plunger and tending to advance said plunger at all times. Y Y

4. A mechanical movement comprising, a casing, a plunger slidable therein, a longitudinal `groove of limited length in the plunger, a pair of spaced'longitudinal grooves of limited length in the casing in register with the groove in the plunger, a nrst arm slidable from one of the grooves in the casing to the groove in the plunger when the plunger is moved in one direction in the casing,v a second arm slidablefrom the other groove in the casing to the groove in the plunger whenthe plunger is moved in the other direction in the casing, spring :means interposed Lbetween the arms, said spring means acting through one 'of the arms'when that yarm slides out of the groovey in the casing into the groove in the plunger formoving the plunger in one direction, said spring means acting through the other arm When that 'arm' slides outof the groove lin 'the casing into .the groove in the plunger for moving the plunger in the other direction, and said vspring meansbeing compressed and said plunger being free of the spring means When both arms slide out of the groove Ain the plunger into the grooves in the casing. f

i 5. :A mechanical movement comprising a casing, a plunger slidable therein, first and second longitudinalv grooves of limited" length inthe plunger, rstand second longitudinal grooves of llimitedlength in the casing inregister respectivelywith the first and second longitudinal grooves-in the plunger, affirst arm slidable from the rst groove in the casing into the rst groove in the plunger when the plunger is advanced, a

second arm slidable from the second groovein the casing into the second groove in the plunger when the plunger is advanced, rst spring means for-advancing the flrstarm, second spring means ,for advancingV the second arm, said rst spring means acting through the i'lrst arm to advance the plunger when the first arm slides out of the first groove in the casing into therst groove in the plunger-and said rst spring means being compressed and said plunger being free of the rst' spring meanswhen the plunger is retracted and the rst arm slides out of the first groove in the plungerinto the rst groove in the casing, said second spring means acting through the second arm to advance the plunger when the secondarm slidesout of the second vgroove in the 'casing into the second groove in the plunger and said second spring means being compressed and said plunger being free of the second spring means when the plunger is retracted and the second arm'slidesout of the second groove in the plunger into lthe second groove in the casing.

65A" mechanical movement comprising, a casing, a plunger slidable therein, iirst and secondilongitudinaltgrooves of limited length .in the plunger, rst'and'second longitudinal grooves. of

limited'length in the casing in register respecmtively f with` the first and second longitudinal grooves in the plunger, a iirst arm slidable from lthe nrst'groove in the casing into the'rst groove the casing into the second groovein the plunger for advancing the first arm, second spring means 9 for advancing the second arm, said first spring means acting through the first arm to advance the plunger when the first arm slides out of the first groove in the casing into the first groove in the plunger and said first spring means being compressed and said plunger being free of the rst spring means when the plunger is retracted and the first arm slides out of the first groove in the plunger into the first groove in the casing, said second spring means acting through the second arm to advance the plunger when the second arm slides out of the second groove in the casing with the second groove in the plunger and said second spring means being' compressed and said plunger being free of the second spring means when the plunger is retracted and the second arm slides out of the second groove in the plunger into the second groove in the casing, the longitudinal spacing of the rst Vgrooves being such with respect to the longitudinalY spacing of the second grooves that the rst spring means becomes eiective to advance the plunger sooner than the second spring means as the plunger'is advanced.

7. A mechanical movement comprising, a casing, a plunger slidable therein, a longitudinal groove of limited length in the plunger, a longitudinal groove of limited length in the casing in register with the groove in the plunger, an

10 arm slidable from one groove to the other as the plunger is advanced and retracted in the casing, spring means for advancing the arm, said spring means acting through the arm to advance the plunger when the arm slides out of the groove in the casing into the groove in the plunger and said spring means being compressed and said plunger being free of the spring means when the plunger is retracted and the arm slides out of the groove in the plunger into the groove in the casing, and means to shift the grooves with respect to each other to prevent sliding of the arm from one groove to the other.

WARREN H. KINTZINGER.

REFERENCES CITED The following references are of record vin the Vle of this patent:

UNITED STATES PATENTS Number Name Date 1,444,248l Hofmann Feb. 6, 1923 1,714,646 Thomann May 28, 1929 1,928,816 Grayson Oct. 3, 1933 2,143,030 Pym et al Jan. 10, 1939 2,145,891 Rice Feb. 7, 1939 2,389,259 Horlacher Nov. 20, 1945 2,402,400 V Hewitt et al June 18, 1946 

